They entertain large numbers of people (5)
I believe the answer is:
hosts
This clue is a triple definition!
'they entertain' is the first definition.
(I've seen this before)
'large numbers' is the second definition.
(host can mean a large number of people)
'of' is a link.
'people' is the third definition.
(host is a kind of person)
(Other definitions for hosts that I've seen before include "They invite and entertain guests" , "Those giving a party" , "People who entertain" , "vast crowds" , "Innkeepers" .)